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README Badge Generator

Generate shields.io badges for your README without remembering the URL format. Pick a preset — npm version, Docker pulls, GitHub Actions, license, coverage, or a custom static label — and copy ready-to-paste Markdown, HTML, or just the image URL.

ツール要約

このツールは構造化された入力を受け取り、サーバーへアップロードせずにブラウザで決定的な出力を返します。

ツール名
README Badge Generator
入力の目的
変換・検証・分析するソースコンテンツを入力してください。
出力の目的
コピー・再利用・デバッグに適した正規化された出力を受け取ります。
入力例
Preset: npm-version, package: react, style: flat-square
出力例
![react version](https://img.shields.io/npm/v/react?style=flat-square&logo=npm)
Live previewbuild status
Markdown
![build status](https://img.shields.io/badge/build-passing-brightgreen)
HTML
<img src="https://img.shields.io/badge/build-passing-brightgreen" alt="build status" />
Image URL
https://img.shields.io/badge/build-passing-brightgreen

ツールの紹介

Generate shields.io badges for your README without remembering the URL format. Pick a preset — npm version, Docker pulls, GitHub Actions, license, coverage, or a custom static label — and copy ready-to-paste Markdown, HTML, or just the image URL.

ツール概要

Shields.io is the de-facto badge service for open source READMEs, but its URL grammar is easy to forget and tedious to type. This tool wraps the most-used badge types in a friendly form, validates a live preview, and emits Markdown/HTML/URL output you can drop into any README, doc site, or PR template. Badges still render through shields.io, so they update automatically as your project changes.

ユースケース

  • Add a build-status badge to a GitHub README
  • Show npm version and weekly downloads on a package page
  • Display Codecov coverage in a PR template
  • Generate a custom "made with love" badge for a portfolio

入力／出力の例

Live npm version badge with the npm logo and a flat-square style.
入力の目的
Preset: npm-version, package: react, style: flat-square
出力の目的
![react version](https://img.shields.io/npm/v/react?style=flat-square&logo=npm)

よくある質問

Does the badge auto-update?+
Yes. Shields.io re-fetches the underlying source (npm registry, GitHub API, Docker Hub, etc.) at request time, so the badge stays current.
Can I use a custom logo?+
Yes. Any simple-icons slug works — type `github`, `docker`, `npm`, `python`, `rust`, etc. into the logo field.
What color values are supported?+
Named colors (brightgreen, blue, red, lightgrey, orange, yellow) and hex codes (with or without the leading #) both work.
Is my form data uploaded?+
No. URLs are built entirely in your browser. Only the final badge image request goes to shields.io when the preview renders.

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